Title:
MOBILE X-RAY IMAGE CAPTURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/216266
Kind Code:
A1
Abstract:
An X-ray control circuit adjusts the frequency of alternating-current power converted by an inverter in such a way that a tube voltage value detected by a tube voltage detector matches a preset target tube voltage value. With a storage battery that is not degraded, an operating amount of the inverter that is required until the detected tube voltage value reaches the target tube voltage value is low. Meanwhile, the operating amount of the inverter is high with a degraded storage battery. By employing this characteristic, a determining unit determines that a storage battery is degraded if an inverter frequency required by the time the detected tube voltage value reaches the target tube voltage value is larger than a preset threshold Fth. Since the degradation of the storage battery is determined using the operating amount of the inverter in an actual usage state, the state of degradation of the storage battery can be ascertained more accurately than in the past.
Inventors:
YUASA TAKUYA (JP)
Application Number:
PCT/JP2018/003821
Publication Date:
November 29, 2018
Filing Date:
February 05, 2018
Export Citation:
Assignee:
SHIMADZU CORP (JP)
International Classes:
A61B6/00; H05G1/26
Domestic Patent References:
| WO2011024608A1 | 2011-03-03 | |||
| WO2010004855A1 | 2010-01-14 |
Foreign References:
| JPH0487298A | 1992-03-19 | |||
| JP2006141777A | 2006-06-08 | |||
| US20170027537A1 | 2017-02-02 |
Attorney, Agent or Firm:
SUGITANI Tsutomu (JP)
Download PDF: